Re: [PATCH bpf-next 1/3] libbpf: add asm/unistd.h to xsk to get __NR_mmap2

[Yonghong Song]

On 8/13/19 3:23 AM, Ivan Khoronzhuk wrote:
> That's needed to get __NR_mmap2 when mmap2 syscall is used.

It seems I did not have this issue on x64 machine e.g., Fedora 29.
My glibc version is 2.28. gcc 8.2.1.

What is your particular system glibc version?
So needing kernel asm/unistd.h is because of older glibc on your
system, or something else? Could you clarify?

> 
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxx>
> ---
>   tools/lib/bpf/xsk.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c
> index 5007b5d4fd2c..f2fc40f9804c 100644
> --- a/tools/lib/bpf/xsk.c
> +++ b/tools/lib/bpf/xsk.c
> @@ -12,6 +12,7 @@
>   #include <stdlib.h>
>   #include <string.h>
>   #include <unistd.h>
> +#include <asm/unistd.h>
>   #include <arpa/inet.h>
>   #include <asm/barrier.h>
>   #include <linux/compiler.h>
>